20 yards limit!

It's my first year bowhunting, my bow is an older model PSE with a flipper rest, and my broadheads don't group with my fieldpoints.

10 yards: FP and broadheads group about the same.
16 yards: FP still on the money, BH are 2" or so to the right
20 yards: FP still centered, BH are about 4" to the right.

Until my BH are grouping more like my fieldpoints or at least grouping the same regardless of the distance, I don't want to be adjusting for more than about 4". It may be a tuning issue, it may be using an older, less accurate setup.

Plus, it's an older bow and though I don't know what the FPS is, I know it's slower. I did a video shoot recently with a couple of friends and the speed difference was easily observable. On the bright side, I totally held my own at 20 yards in the video shoot and the friends are both quite good with a bow.